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Significant Accounting Policies (Narrative) (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) segment | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Accounting Policies [Line Items] |  |  |  |  |  |  |
Interest costs capitalized |  |  |  | $ 0.3 |  | $ 0.5 | $ 0.6
Impairment of intangible assets | $ 0.0 |  |  |  |  |  |
Goodwill impairment loss | $ 0.0 |  |  |  |  |  |
Deferred Federal Income Tax Expense (Benefit) - Undistributed Earnings of Foreign Subsidiaries |  |  |  | 4.6 |  |  |
Undistributed Earnings of Foreign Subsidiaries Not Permanently Reinvested |  | $ 328.0 | $ 328.0 | 328.0 | $ 328.0 |  |
Undistributed earnings of foreign subsidiaries |  | $ 219.0 | $ 219.0 | 219.0 | $ 219.0 |  |
Advertising expenses |  |  |  | 99.0 |  | 98.4 | 105.5
Research and development expenses |  |  |  | $ 19.7 |  | $ 21.8 | $ 23.8
Number of operating segments |  |  | 3 |  | 3 |  |
Number of reporting units | segment |  |  |  |  | 3 |  |
Minimum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Service And Maintenance Agreement Term |  | 3 months |  |  |  |  |
Maximum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Service And Maintenance Agreement Term |  | 60 months |  |  |  |  |
Amortizable Period, Option 1 | Minimum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible assets, amortizable life |  | 5 years |  |  |  |  |
Amortizable Period, Option 2 |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible assets, amortizable life |  | 7 years |  |  |  |  |
Amortizable Period, Option 3 |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible assets, amortizable life |  | 10 years |  |  |  |  |
Amortizable Period, Option 4 |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible assets, amortizable life |  | 15 years |  |  |  |  |
Amortizable Period, Option 5 |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible assets, amortizable life |  | 23 years |  |  |  |  |
Amortizable Period, Option 6 | Maximum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible assets, amortizable life |  | 30 years |  |  |  |  |
Buildings | Minimum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life |  | 40 years |  |  |  |  |
Buildings | Maximum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life |  | 50 years |  |  |  |  |
Machinery, equipment and furniture | Minimum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life |  | 3 years |  |  |  |  |
Machinery, equipment and furniture | Maximum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life |  | 10 years |  |  |  |  |
Software and Software Development Costs | Minimum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life |  | 5 years |  |  |  |  |
Software and Software Development Costs | Maximum |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life |  | 10 years |  |  |  |  |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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